(;GM[1]FF[4]SZ[19]
GN[Variation 2a.]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem78/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem78/Attempts

Variation 2a.]
PL[W]

AB[cn][en][in][co][eo][go][io][bp][jp][bq][cq][iq][kq][cr][hr][jr]
AW[cp][dp][ep][fp][hp][ip][dq][gq][dr][gr][ir][is]
CR[cr]

;B[hq]C[B4]MN[4]
;W[hs]C[W5]MN[5]
;B[jq]C[B6]MN[6]
;W[fr]C[W7]MN[7]

;CR[cr]
)
